Margera rocked back in forth in agony at the guardrail that Dunn pierced with his Porsche Monday morning with such force that the car slammed through about 40 feet of trees before exploding into flames.

Dunn. 34, and his passenger, Zachary Hartwell. 30, died of blunt and thermal trauma, according to the coroner.

Margera came to the crash site with his wife, Missy, and a handful of friends. He seemed so distraught that at one point, Bam looked like he could have collapsed without his friends holding him up as he walked away.